ASTROSAT CZTI

Data Quality Report

Orbit 35933

Creation date: 2022-06-09T03:05:36.678372
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_080T01_9000005146_35933cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35933cztM0_level2_quad_clean.evt
Size (bytes)541,592,64098,671,680
Size516.5 MB 94.1 MB
Events in quadrant A3,352,469655,199
Events in quadrant B5,291,993635,392
Events in quadrant C3,428,163653,989
Events in quadrant D3,916,828618,634

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136753
B0196032
C0136312
D0156452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60781382.270484%
B607890414.873314%
C60781292.122409%
D60781151.892070%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8853 6080 103 103 1.16% 1.69%
B 8853 6080 709 709 8.01% 11.66%
C 8853 6080 94 94 1.06% 1.55%
D 8853 6080 83 83 0.94% 1.37%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 9 143 340386 2319.06 716 703 146.5
A 10 83 177457 1206.72 716 703 146.5
A 15 169 50883 342.59 716 703 146.5
B 5 172 2544704 19861.63 658 642 128.1
B 5 255 119107 924.86 658 642 128.1
B 12 111 15406 115.26 658 642 128.1
C 0 10 337773 2045.92 698 706 164.8
C 15 214 250567 1516.6 698 706 164.8
C 0 207 117109 706.54 698 706 164.8
D 10 118 279531 1606.84 700 682 173.5
D 8 195 272828 1568.21 700 682 173.5
D 1 52 270214 1553.15 700 682 173.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter